Convert ICD-10 Code J39.0 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
J39.0 Retropharyngeal and parapharyngeal abscess		478.22 Parapharyngeal abscess
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
J39.0 Retropharyngeal and parapharyngeal abscess		478.24 Retropharyngeal abscess
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

ICD-10 to ICD-9 crosswalk for code J39.0 - retropharyngeal and parapharyngeal abscess based on the most recent General Equivalence Mappings (GEMS) information.